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>is_valid_pdf</H1
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><H2
>Name</H2
>is_valid_pdf&nbsp;--&nbsp;Check if a vector defines a valid pdf</DIV
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>Synopsis</H2
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><PRE
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>#include &lt;it/source.h&gt;
      </PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int is_valid_pdf</CODE
>( vec pdf, double tol
        );</CODE
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><H2
>DESCRIPTION</H2
><P
> The function <CODE
CLASS="FUNCTION"
>is_valid_pdf</CODE
> verifies that the summation of the vector <CODE
CLASS="PARAMETER"
>pdf</CODE
>, seen as the probability distribution function over a finite set, is equal to 1 with the tolerance <CODE
CLASS="PARAMETER"
>tol</CODE
>.   </P
><H2
>RETURN VALUE</H2
><P
>    
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